GitHub is a web-based hosting service for projects that use the Git revision control system. It is written in Ruby on Rails by Logical Awesome developers Chris Wanstrath, PJ Hyett, and Tom Preston-Werner. GitHub offers both commercial plans and free accounts for open source projects.

Bitbucket is a code hosting site, for the Git and Mercurial version control systems. It provides a fully featured environment for managing development, including a wiki, a powerful issue tracker, and easy collaboration with others.

SourceForge is a web-based source code repository. It acts as a centralized location for software developers to control and manage open source software development. SourceForge repository hosts more than 324,000 projects and has more than 3.4 million registered users, although not all are active. Features include support for CVS, SVN, Bazaar, Git or Mercurial repositories, project wikis, metrics and analysis, access to a MySQL database, and unique sub-domain URLs.

OpenProject is an open source software for project management with a wide set of features and plugins and an active international community. It supports project timelines / Gantt charts, issue tracking, wiki, document management, time and cost reporting, code management, Scrum and much more.

Mantis Bug Tracker is a free and open source, web-based bug tracking system. It is written in the PHP scripting language and works with MySQL, MS SQL, and PostgreSQL databases and a webserver. MantisBT can be installed on Windows, Linux, Mac OS, OS/2, and others. Almost any web browser should be able to function as a client. Moreover MantisHub is available as commercial hosted solution of MantisBT.

Microsoft Office Project gives you robust project management tools with the right blend of usability, power, and flexibility, so you can manage projects more efficiently and effectively. You can stay informed and control project work, schedules, and finances, keep project teams aligned, and be more productive through integration with familiar Microsoft Office system programs, powerful reporting, guided planning, and flexible tools.

Team Clerk is project and task management software that automatically keeps your team organized and monitors progress of all of your projects and tasks. Let us organize what you do,so you can focus on why you do it.

Tracker is a story-based project planning tool from Pivotal Labs that allows teams to collaborate and react to real-world changes instantly. Its based on agile software methods, but can be used on a wide range of projects.

Bugzilla is a "Defect Tracking System" or "Bug-Tracking System". Defect Tracking Systems allow individual or groups of developers to keep track of outstanding bugs in their product effectively. Most commercial defect-tracking software vendors charge enormous licensing fees. Despite being "free", Bugzilla has many features its expensive counterparts lack. Consequently, Bugzilla has quickly become a favorite of hundreds of organizations across the globe.

Ora is an all-in-one realtime workspace for teams. It has everything your team might need to be productive. Task management, kanban, time tracking, chat, reports on projects and team productivity. It is powerful, yet simple and easy to use.